Toyota CH-R Service Manual: Precaution

PRECAUTION

IGNITION SWITCH EXPRESSIONS

(a) The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression

Ignition Switch (Position)

Engine Switch (Condition)

Ignition Switch off

LOCK

Off (Lock)

Ignition Switch ACC

ACC

On (ACC)

Ignition Switch ON

ON

On (IG)

Engine Start

START

On (Start)

HANDLING PRECAUTIONS FOR STEERING SYSTEM

(a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in a driving hazard.

HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal, and installation of parts), be sure to read the precautionary notices for Supplemental Restraint System.

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HANDLING PRECAUTIONS FOR STEERING COLUMN

(a) When handling the steering column assembly:

(1) Do not subject the steering column assembly (especially the motor and torque sensor) to any impact. Replace the steering column assembly with a new one if subjected to a strong impact.

(2) Do not pull the wire harness when moving the steering column assembly.

(3) When the electric power steering column sub-assembly has been replaced, perform torque sensor zero point calibration.

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(b) When disconnecting or reconnecting the connectors:

(1) Before disconnecting connectors related to the power steering system, turn the ignition switch to ON, center the steering wheel, turn the ignition switch off, and then disconnect the connectors.

(2) Before reconnecting connectors related to the power steering system, ensure that the ignition switch is off. Then center the steering wheel and turn the ignition switch to ON.

NOTICE:

Do not turn the ignition switch to ON when the steering wheel is not centered.

(3) If the above operations are not carried out properly, the steering center point (zero point) will deviate, which may lead to a difference in steering effort between turning right and left.

If there is a difference in steering effort between turning right and left, perform torque sensor zero point calibration after initializing the torque sensor zero point.

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HANDLING PRECAUTION FOR SPIRAL CABLE

(a) Do not replace the spiral cable with sensor sub-assembly with the battery connected and the ignition switch ON.

(b) Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly with the battery connected and the ignition switch ON.

(c) Ensure that the steering wheel assembly is installed and aligned straight when inspecting the steering sensor.

(d) Be sure that the spiral cable with sensor sub-assembly is in the center position during installation and when removing and installing the steering wheel.

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CAUTION:

If the steering wheel is turned without the spiral cable with sensor sub-assembly installed in the center position, the cable may break.

    Steering System
    ...

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